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#96868 - 09/04/17 02:24 PM Re: 10 Band EQ on the 976 [Re: 975 destroyer]
sdurani Offline
Desperado

Registered: 01/23/02
Posts: 765
Loc: Monterey Park, CA
Originally Posted By 975 destroyer
You set distance BEFORE messing w/levels or eq. You made clear why in the latter part of your post.
No. Peaks & dips in the frequency response don't affect delays like they do levels, so distances can be set before or after equalization.
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#96869 - 09/04/17 10:46 PM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 214
Loc: East Texas
Peaks and dips may not effect time alignment but changes in time alignment will show on waterfall plots generated by REW.

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#96871 - 09/05/17 06:28 PM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
sdurani Offline
Desperado

Registered: 01/23/02
Posts: 765
Loc: Monterey Park, CA
How will delaying a signal change its waterfall plot?
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#96873 - 09/06/17 09:39 AM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 214
Loc: East Texas
It is not just one signal. If time alignment is off across multiple sources as we have in theatre systems REW will see it.

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#96876 - 09/06/17 05:31 PM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
sdurani Offline
Desperado

Registered: 01/23/02
Posts: 765
Loc: Monterey Park, CA
You're measuring multiple signals/channels simultaneously? Why would you do that when each channel is EQ'd independently of other channels?
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#96884 - 09/08/17 10:27 AM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 214
Loc: East Texas
I start one channel at a time then run all together to check interactions.

I start by setting distances and levels then go channel by channel finishing by running all channels.

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#96885 - 09/08/17 10:53 AM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
sdurani Offline
Desperado

Registered: 01/23/02
Posts: 765
Loc: Monterey Park, CA
Each channel gets independent signals, so if you're checking their interaction using the same signal, that doesn't tell you anything about what it will sound like in actual use.
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#96889 - 09/08/17 07:02 PM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 214
Loc: East Texas
You do understand the concept of multi channel disks? I am not trying to be a smart ass, only asking. For 5.1 you run five seperate channels plus sub of pink noise. Do each channel plus sub seperate then all together.

Do you eq stereo one channel at a time only? If you do then you are going against every stand alone eq manufacturer on the planet.

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#96890 - 09/08/17 09:38 PM Re: 10 Band EQ on the 976 [Re: sdurani]
975 destroyer Offline
Gunslinger

Registered: 09/07/15
Posts: 129
Loc: Georgia, US of A!
Originally Posted By Stephen B
I start w/one channel at a time ...
With a test signal, (e.g. pink noise)...
Originally Posted By Stephen B
...then run [test again] all together to check interactions.
such as room modes. So far, so good.

Originally Posted By sdurani
Each channel gets independent signals...
...only when watching a movie or listening music
Originally Posted By sdurani
...so if you're checking their interaction using the same [test] signal, that doesn't tell you anything about what it [or they] will sound like in actual use.
Checking "their interaction" (or correctly) the final calibrating, is not supposed to "tell you" what your system will sound like in actual use.
If your system's "interaction" has balanced tone and all channels (2, 5, 6, 7, or 8) are wired w/ matching polarity*, in theory, the system should not "have a sound." It should be "invisible to your ears."
* incorrectly referred to as in-phase

Examine my signature carefully. You will see a very complex system. Tri-amped LCR channels & dedicated surround L&R channel subs not to mention an LFE/sub. I used the same thought process as SteveB to guide me from from a to z. The final steps I use selected tracks from CDs* I've heard thousands of times on many systems over the last 35 years, some costing well up in the 5 figures.
* and certain video passages

Tony



Edited by 975 destroyer (09/08/17 09:58 PM)
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Outlaw Audio 976
Samsung BD player, Phillips CD chgr, Dish DVR, Firestick

Canare 14 ga - LCR tweeters inside; CC outside
BJC 10 ga - LCR mids*, inside & out
8 ga Powerline - LR woofers, inside & out

LR: Tri-amped Polk RTi A7
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CC: bi-amped Polk CSi A6 -> Rotel RB981
SWs: Sunfire & 4 Audio Pros - LFE True Sig; 4 Evidence - 1 @ ea corner
Surrounds: Rotel RB981 -> Polk RTi A3
Power Conditioning & Distribution:
3 dedicated 20A feeds; APC H15; 4 Furman MP-20s

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#96891 - 09/09/17 09:56 AM Re: 10 Band EQ on the 976 [Re: Owl's_Warder]
Stephen B Offline
Gunslinger

Registered: 01/15/15
Posts: 214
Loc: East Texas
I do it the same way Tony. When I still ran SDA's the procedure was to do each channel separately without the interconnect cable then run both channels together with the cable in place for the final tweaks.

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